[Pathogenesis of HIV-associated Kaposi sarcoma--the Koebner phenomenon as a possible pathogenetic mechanism].

The pathogenesis of the HIV associated Kaposi's sarcoma is still unclear, but it appears to be a multifactorial process. Different investigations have shown, that cytokines and growth factors influence the development of KS. Several cases with tumor manifestation after irritation of the skin are demonstrated. Therefore a mechanism of development comparable with the Koebner Phenomenon can be postulated.